Imagine the MC responding "what i am going to do is call the police and report the stalking and invasion of my privacy by your cameras on my room and thef of my appartment key, see you in court 😃"
If he does something like that he will be the most badass MC and the manga will trascend common manga sense.
First panel makes it look like they're standing in the dirt of a public park garden having this conversation. At least move to the sidewalk, you heathens.
The way she speaks about herself makes me think of multiple personalities. I don't know if they will end together, but if they do Masaki is going to have a pretty interesting life. If she doesn't murder him, that's it.
He is probably going to hug her saying I am sorry, start crying, and then it is going to be a happy ending. Either walk away forgiven each other or they are going to become a couple.